sl@0: /*
sl@0: * Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: * DSA shim classes definition
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: /**
sl@0:  @file
sl@0:  @internalComponent
sl@0:  @released
sl@0: */
sl@0: 
sl@0: #ifndef __DSASHIM_H__
sl@0: #define __DSASHIM_H__
sl@0: 
sl@0: #include <asymmetric.h>
sl@0: 
sl@0: namespace CryptoSpi
sl@0: 	{
sl@0: 	class CSigner;
sl@0: 	class CVerifier;
sl@0: 	class CKey;
sl@0: 	}
sl@0: 	
sl@0: NONSHARABLE_CLASS(CDsaSignerShim) : public CDSASigner
sl@0: {
sl@0: public:
sl@0: 	/**
sl@0: 	Creates an CDsaSignerShim object which has the same interface
sl@0: 	as CDSASigner but delegates all work to a Crypto SPI plug-in.
sl@0: 	
sl@0: 	@param aKey The signing key
sl@0: 	@return A pointer to a CDsaSignerShim instance
sl@0: 	*/
sl@0: 	static CDsaSignerShim* NewL(const CDSAPrivateKey& aKey);
sl@0: 	
sl@0: 	/**
sl@0: 	Creates an CDsaSignerShim object which has the same interface
sl@0: 	as CDSASigner but delegates all work to a Crypto SPI plug-in.
sl@0: 	
sl@0: 	A pointer to the new object is placed on the cleanup stack
sl@0: 	
sl@0: 	@param aKey The signing key
sl@0: 	@return A pointer to a CDsaSignerShim instance
sl@0: 	*/
sl@0: 	static CDsaSignerShim* NewLC(const CDSAPrivateKey& aKey);
sl@0: 	
sl@0: 	/**
sl@0: 	Digitally signs the specified input message 
sl@0: 	Note that in order to be interoperable and compliant with the DSS, aInput
sl@0: 	must be the result of a SHA-1 hash.
sl@0: 
sl@0: 	@param aInput	A SHA-1 hash of the message to sign
sl@0: 	@return			A pointer to a new CSignature object
sl@0: 	@panic ECryptoPanicInputTooLarge	If aInput is larger than MaxInputLength(),
sl@0: 										which is likely to happen if the caller
sl@0: 										has passed in something that has not been hashed.
sl@0: 	*/
sl@0: 	virtual CDSASignature* SignL(const TDesC8& aInput) const;
sl@0: 
sl@0: 	//From MSignatureSystem
sl@0: 	virtual TInt MaxInputLength() const;
sl@0: 	
sl@0: 	/// Destructor
sl@0: 	~CDsaSignerShim();
sl@0: 	
sl@0: private:
sl@0: 	/// Constructor
sl@0: 	CDsaSignerShim(const CDSAPrivateKey& aKey);
sl@0: 	void ConstructL(const CDSAPrivateKey& aKey);
sl@0: 	
sl@0: private:
sl@0: 	/// SPI delegate
sl@0: 	CryptoSpi::CSigner* iSignerImpl;
sl@0: 		
sl@0: 	/// SPI requires all key to passed as key-objects
sl@0: 	CryptoSpi::CKey* iKey;
sl@0: };
sl@0: 
sl@0: NONSHARABLE_CLASS(CDsaVerifierShim) : public CDSAVerifier
sl@0: {
sl@0: public:
sl@0: 	/**
sl@0: 	Creates an CDsaVerifierShim object which has the same interface
sl@0: 	as CDSAVerifier but delegates all work to a Crypto SPI plug-in.
sl@0: 	
sl@0: 	@param aKey The verification key
sl@0: 	@return A pointer to a CDsaVerifierShim instance
sl@0: 	*/
sl@0: 	static CDsaVerifierShim* NewL(const CDSAPublicKey& aKey);
sl@0: 	
sl@0: 	/**
sl@0: 	Creates an CDsaVerifierShim object which has the same interface
sl@0: 	as CDSAVerifier but delegates all work to a Crypto SPI plug-in.
sl@0: 
sl@0: 	A pointer to the new object is placed on the cleanup stack
sl@0: 
sl@0: 	@param aKey The verification key
sl@0: 	@return A pointer to a CDsaVerifierShim instance
sl@0: 	*/
sl@0: 	static CDsaVerifierShim* NewLC(const CDSAPublicKey& aKey);
sl@0: 
sl@0: 	//From CVerifier	
sl@0: 	virtual TBool VerifyL(const TDesC8& aInput, const CDSASignature& aSignature) const;
sl@0: 
sl@0: 	//From MSignatureSystem
sl@0: 	virtual TInt MaxInputLength() const;
sl@0: 
sl@0: 	// Destructor
sl@0: 	~CDsaVerifierShim();
sl@0: 	
sl@0: private:
sl@0: 	// Constructor
sl@0: 	CDsaVerifierShim(const CDSAPublicKey& aKey);
sl@0: 	void ConstructL(const CDSAPublicKey& aKey);
sl@0: 	
sl@0: private:
sl@0: 	/// SPI delegate
sl@0: 	CryptoSpi::CVerifier* iVerifierImpl;
sl@0: 	
sl@0: 	/// SPI requires all key to passed as key-objects
sl@0: 	CryptoSpi::CKey* iKey;
sl@0: };
sl@0: 
sl@0: #endif // __DSASHIM_H__